Assertion and denial : a contribution from logical notationsPietarinen, Ahti-Veikko; Bellucci, FrancescoJournal of applied logic2017 / p. 1-22 : ill https://doi.org/10.1016/j.jal.2017.01.001 Assertive graphsBellucci, Francesco; Chiffi, Daniele; Pietarinen, Ahti-VeikkoJournal of applied non-classical logics2018 / p. 72–91 https://doi.org/10.1080/11663081.2017.1418101 Journal metrics at Scopus Aricle at Scopus Frege and Peirce on the signs of generalityPietarinen, Ahti-Veikko; Bellucci, Francesco6th World Congress and School on Universal Logic, UNILOG'2018, June 16–26, 20182018 / p. 266-268 : ill http://www.uni-log.org/pro2018/HANDBOOK-UNILOG2018.pdf Notational differencesBellucci, Francesco; Pietarinen, Ahti-VeikkoActa Analytica2020 / p. 289-314 https://doi.org/10.1007/s12136-020-00425-1 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Peirce and the unity of the propositionBellucci, FrancescoTransactions of the Charles S. Peirce Society2014 / p. 201-219 Simplex sigillum veri : Peano, Frege, and Peirce on the primitives of logicBellucci, Francesco; Moktefi, Amirouche; Pietarinen, Ahti-VeikkoHistory and philosophy of logic2018 / p. 80-95 : ill https://doi.org/10.1080/01445340.2017.1358414 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS